REST API create request response

Is there a way to define what root level objects are populated once an entity is created?
In the documentation for entity service api, the following is stated for create request-

fields Attributes to return String[]
populate Relations, components and dynamic zones to populate PopulateParameter
data Input data Object

#

But no examples are given on how to return specific objects at different levels. For other requests, these examples are clearly defined. I want to retrieve components and a single relation.

System Information
  • Strapi Version: 4.3.3
  • Operating System: Mac Os 12.5
  • Database: Postgres 13
  • Node Version: v14.15.5
  • NPM Version: 6.14.11
  • Yarn Version: 1.22.18